Evaluation on Seismic Safety and Countermeasures for Civil Structures in the Vicinity of Active Faults

活断层附近土木结构地震安全性评价及对策

• 批准号: 11450175
• 负责人: TAKADA Shiro
• 金额: $ 9.02万
• 依托单位: Kobe University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-11450175/
• 关键词: Active Fault; Geological Features of Deep Ground; Pipeline; Bridge System; Tunnel; Strong Ground Motion; Surface Fault Displ.; Countermeasures for Fault; パイブライン; 地中レーダ探査; 伏在活断層; 震度分布の即時推定; 断層; 潜在活断層; 断層モデル; 地震動; 地下構造物; トンネル

(1) Analysis of structural damage in the vicinity of faults : Damage of houses, pipelines and tunnels due to fault movement was investigated during past earthquakes. The effects of surface fault movement are greater than that by ground motions.(2) Prediction of strong ground motion by the rupture of active fault : Ground motion intensity majp is created for active faults with high possibility of the rupture based on recent strong ground motion records.(3) Features of time history of ground motions : Non-stationary spectra and phase spectra are analyzed for the recorded time histories of ground motions and ; interpolated ground motions are obtained : Moreover, an impulsive ground motion is simulated by FEM.(4) Observation of ground motion in the vicinity of fault : 4 seismometers have been set in the vicinity of faults in Kobe area. A lower level of motions was recorded and analyzed.(5) Geo-rader survey : Geo-rader survey was performed to investigate the relation between con-sealed faults and bent surface deformation due to fault rupture.(6) Estimation of surface ground deformation by an elastic dislocation model : A mathematical formulation was developed to obtain surface ground deformation due to fault rupture and applied to cases in Kobe and Chi-Chi Earthquakes.(7) Proposal for countermeasures : Design method and several countermeasures were proposed for residential houses, pipelines, bridge and tunnels in the vicinity of faults.

(1)断层附近结构破坏分析：在过去的地震中，对断层运动对房屋、管道和隧道的破坏进行了调查。(2)活动断层破裂对强地震动的预测：根据近期的强地震动记录，对破裂可能性较大的活动断层建立了地震动强度MARP。(3)地震动时程特征：对记录到的地震动时程进行了非平稳谱和相位谱分析，得到了内插的地震动，并用有限元方法模拟了脉冲式地震动。(4)断层附近的地面运动观测：在神户地区的断层附近布设了4台地震仪。(5)Geo-Rader调查：利用Geo-Rader调查研究封闭断层与断层破裂弯曲地表变形之间的关系。(6)利用弹性位错模型估算地表变形：建立了获得断层破裂地表变形的数学公式，并将其应用于神户地震和集集地震。(7)对策建议：针对断层附近的民房、管道、桥梁和隧道，提出了设计方法和若干对策。

项目成果

土岐憲三: "リアルタイム地震防災のための被害情報の逐次更新について"第4回構造物の安全性・信頼性に関する国内シンポジウム(JCOSSAR2000)論文集. Vol.4. 189-196 (2000)

Kenzo Toki：“关于实时地震灾害预防的损伤信息的连续更新”第四届国内结构安全与可靠性研讨会论文集（JCOSSAR2000）第4卷189-196（2000）。

Kitaura.M: "Damage Characteristics of Buildings Close to Fault in the 1999 Ji-Ji Earthquake"Proc.of 6^<th> International Conference on Seismic Zonation. No.29(CD-ROM). 6p (2000)

Kitaura.M：“1999年集集地震中断层附近建筑物的破坏特征”，第6届国际地震分区会议论文集。

清野純史, 土岐憲三, 三浦房紀, 江尻譲嗣, 横山圭樹: "震源近傍の強震動特性について"第25回地震工学研究発表会講演論文集. Vol.1. 65-68 (1999)

Junji Seino，Kenzo Toki，Fusunori Miura，Joji Ejiri，Keiki Yokoyama：“论震中附近的强地震动特征”第25届地震工程研究会议论文集1. 65-68（1999）。

S. Takada and T. Mori: "Prediction of strong ground motion in the vicinity of fault considering asperity"Journal of Structural Engineering Foundation. 40-B. 23-39 (1998)

S. Takada 和 T. Mori：“考虑粗糙度的断层附近强地面运动的预测”结构工程基础杂志。

佐藤忠信, 室野剛隆: "位相情報を用いた地震動のシミュレーション法"土木学会論文集. No.675/I-55. 113-123 (2001)

Tadanobu Sato、Tsuyoshi Murono：“使用相位信息的地震运动模拟方法”日本土木工程师学会论文集第 675/I-55 (2001)。